1、 Rec. ITU-R F.1567 1 RECOMMENDATION ITU-R F.1567 Radio-frequency channel arrangement for digital fixed wireless systems operating in the frequency band 406.1-450 MHz (Question ITU-R 136/9) (2002) The ITU Radiocommunication Assembly, considering a) that according to Article 5 of the Radio Regulations
2、 (RR) the frequency bands 406.1-430 MHz and 440-450 MHz are allocated to the fixed service (FS) on a worldwide basis; b) that any emission capable of causing harmful interference to the low-power satellite emergency position-indicating radiobeacons of the mobile-satellite service in the band 406-406
3、1 MHz is prohibited (see RR Nos. 5.266 and 5.267); c) that FS systems in frequency bands below 1 GHz have been extensively used for many years in certain countries including developing countries; d) that most of these systems utilize analogue technologies; e) that administrations may wish to digiti
4、ze such systems; f) that some administrations may wish to establish digital systems utilizing their existing FS stations; g) that interference both within digital and between digital and analogue fixed wireless systems (FWS) could be minimized by the coordination of radio-frequency (RF) channel arra
5、ngements; h) that FWS operating in the band 406.1 to 450 MHz profit from the enhanced propagation range, relative to higher frequencies deployment; j) that the FS in the band 420-450 MHz is allocated on a co-primary basis with the radiolocation service, and the band 430-440 MHz is allocated to the r
6、adiolocation service with the amateur service co-primary in Region 1 and secondary in Regions 2 and 3; k) that the FS frequency plans in the bands 406.1-450 MHz typically support point-to-point and point-to-multipoint systems with frequency utilization efficiency of 1 bit/s/Hz; l) that the FS in the
7、 bands 410-430 MHz and 440-450 MHz is co-primary with the mobile service (except aeronautical mobile service), and in certain administrations only part of the bands are available to the FS, 2 Rec. ITU-R F.1567 recognizing a) that Resolution 727 (Rev.WRC-2000) invites ITU-R to study, as matter of urg
8、ency, emission criteria, specific sharing criteria and operational characteristics for active spaceborne sensors in the frequency band 420-470 MHz, recommends 1 that administrations should consider the channel arrangement given in Annex 1 for FS system deployment in the frequency range 406.1-430 MHz
9、 and 440-450 MHz. ANNEX 1 RF channel arrangement in the bands 406.1-430 MHz and 440-450 MHz This Annex describes a digital RF channelling arrangement for the bands 406.1-430 MHz and 440-450 MHz. The arrangements provide some different channelling and capacities uses. 1 406.1-413.05 MHz paired with t
10、he 423.05-430 MHz frequency band The RF channel arrangement for this band is based on an adjacent channel spacing from 50 kHz up to 600 kHz and is derived as follows: Let fnbe the centre frequency of one RF channel in the lower half of the band (MHz) nf be the centre frequency of one RF channel in t
11、he upper half of the band (MHz). The systems utilizing time division duplex (TDD) techniques can use both bands. 1.1 Channelling with 50 kHz spacing between carriers, for systems with 50 kHz maximum bandwidth A Main fn = 406.075 + 0.05 n MHz nf = 423.025 + 0.05 n MHz where: n = 1, 2, 3, ., 133 Rec.
12、ITU-R F.1567 3 B Interleaved fn = 406.100 + 0.05 n MHz nf = 423.050 + 0.05 n MHz where: n = 1, 2, 3, ., 132 1.2 Channelling with 100 kHz spacing between carriers, for systems with 100 kHz maximum bandwidth A Main fn = 406.050 + 0.1 n MHz nf = 423.000 + 0.1 n MHz where: n = 1, 2, 3, ., 66 B Interleav
13、ed fn = 406.100 + 0.1 n MHz nf = 423.050 + 0.1 n MHz where: n = 1, 2, 3, ., 66 1.3 Channelling with 150 kHz spacing between carriers, for systems with 150 kHz maximum bandwidth A Main fn = 406.025 + 0.15 n MHz nf = 422.975 + 0.15 n MHz where: n = 1, 2, 3, ., 44 B Interleaved fn = 406.100 + 0.15 n MH
14、z nf = 423.050 + 0.15 n MHz where: n = 1, 2, 3, ., 43 4 Rec. ITU-R F.1567 1.4 Channelling with 200 kHz spacing between carriers, for systems with 200 kHz maximum bandwidth A Main fn = 406.000 + 0.2 n MHz nf = 422.950 + 0.2 n MHz where: n = 1, 2, 3, ., 33 B Interleaved fn = 406.100 + 0.2 n MHz nf = 4
15、23.050 + 0.2 n MHz where: n = 1, 2, 3, ., 32 1.5 Channelling with 250 kHz spacing between carriers, for systems with 250 kHz maximum bandwidth A Main fn = 405.975 + 0.25 n MHz nf = 422.925 + 0.25 n MHz where: n = 1, 2, 3, ., 26 B Interleaved fn = 406.100 + 0.25 n MHz nf = 423.050 + 0.25 n MHz where:
16、 n = 1, 2, 3, ., 26 1.6 Channelling with 600 kHz spacing between carriers, for systems with 600 kHz maximum bandwidth A Main fn = 405.800 + 0.6 n MHz nf = 422.800 + 0.6 n MHz where: n = 1, 2, 3, ., 11 Rec. ITU-R F.1567 5 B Interleaved fn = 406.100 + 0.6 n MHz nf = 423.100 + 0.6 n MHz where: n = 1, 2
17、 3, ., 11 2 413.05-423.05 MHz paired with the 440-450 MHz frequency band The RF channel arrangement for this band is based on an adjacent channel spacing from 250 kHz up to 3.5 MHz and is derived as follows: Let fnbe the centre frequency of one RF channel in the lower half of the band (MHz), nf be
18、the centre frequency of one RF channel in the upper half of the band (MHz). The systems utilizing TDD techniques can use both bands. 2.1 Channelling with 250 kHz spacing between carriers, for systems with 250 kHz maximum bandwidth A Main fn = 412.875 + 0.250 n MHz nf = 439.875 + 0.250 n MHz where: n
19、 = 1, 2, 3, ., 39 B Interleaved fn = 413.000 + 0.250 n MHz nf = 440.000 + 0.250 n MHz where: n = 1, 2, 3, ., 38 2.2 Channelling with 300 kHz spacing between carriers, for systems with 300 kHz maximum bandwidth A Main fn = 412.900 + 0.3 n MHz nf = 439.900 + 0.3 n MHz where: n = 1, 2, 3, ., 32 6 Rec.
20、ITU-R F.1567 B Interleaved fn = 413.050 + 0.3 n MHz nf = 440.050 + 0.3 n MHz where: n = 1, 2, 3, ., 31 2.3 Channelling with 500 kHz spacing between carriers, for systems with 500 kHz maximum bandwidth A Main fn = 412.750 + 0.5 n MHz nf = 439.750 + 0.5 n MHz where: n = 1, 2, 3, ., 19 B Interleaved fn
21、 = 413.000 + 0.5 n MHz nf = 440.000 + 0.5 n MHz where: n = 1, 2, 3, ., 19 2.4 Channelling with 600 kHz spacing between carriers, for systems with 600 kHz maximum bandwidth A Main fn = 412.900 + 0.6 n MHz nf = 439.900 + 0.6 n MHz where: n = 1, 2, 3, ., 16 B Interleaved fn = 413.000 + 0.6 n MHz nf = 4
22、40.000 + 0.6 n MHz where: n = 1, 2, 3, ., 16 Rec. ITU-R F.1567 7 2.5 Channelling with 750 kHz spacing between carriers, for systems with 750 kHz maximum bandwidth A Main fn = 412.750 + 0.75 n MHz nf = 439.750 + 0.75 n MHz where: n = 1, 2, 3, ., 12 B Interleaved fn = 413.125 + 0.75 n MHz nf = 440.125
23、 + 0.75 n MHz where: n = 1, 2, 3, ., 12 2.6 Channelling with 1 MHz spacing between carriers, for systems with 1 MHz maximum bandwidth A Main fn = 412.500 + 1 n MHz nf = 439.500 + 1 n MHz where: n = 1, 2, 3, ., 9 B Interleaved fn = 413.000 + 1 n MHz nf = 440.000 + 1 n MHz where: n = 1, 2, 3, ., 9 2.7
24、 Channelling with 1.75 MHz spacing between carriers, for systems with 1.75 MHz maximum bandwidth A Main fn = 412.750 + 1.75 n MHz nf = 439.750 + 1.75 n MHz where: n = 1, 2, 3, ., 5 8 Rec. ITU-R F.1567 B Interleaved fn = 413.625 + 1.75 n MHz nf = 440.625 + 1.75 n MHz where: n = 1, 2, 3, 4 2.8 Channelling with 3.5 MHz spacing between carriers, for systems with 3.5 MHz maximum bandwidth A Main fn = 411.375 + 3.5 n MHz nf = 438.375 + 3.5 n MHz where: n = 1, 2 B Interleaved fn = 413.125 + 3.5 n MHz nf = 440.125 + 3.5 n MHz where: n = 1, 2
